Htacces mod_rewrite sub directory - .htaccess

Question

I'm having a problem with my .htaccess mod_rewrite. I've made a simple custom CMS and i've put this in a sub directory of my domain; http://www.example.com/cms
I've got the following situations:
cms/index.php?page=modules/pages/index.php
convert to
cms/modules/pages/index
and
cms/index.php?page=modules/pages/edit.php?id=1
convert to
cms/modules/pages/edit/1
I've got it working with a subdomain, but when i use example.com/cms it doesn't do anything
i've made this .htaccess but i couldn't get it working...
RewriteEngine On
Options +FollowSymlinks
RewriteBase /
RewriteCond %{REQUEST_FILENAME} -f [NC,OR]
RewriteCond %{REQUEST_FILENAME} -d [NC]
RewriteRule ^(.*?)$ $1 [L]
RewriteRule ^/cms/([^/]*)/$ cms/index.php?page=$1 [L,QSA]
RewriteRule ^/cms/([^/]*)$ /cms/index.php?page=$1 [L,QSA]
RewriteRule ^/cms/pages/([^/]*)/$ /cms/index.php?page=pages/$1 [L,QSA]
RewriteRule ^/cms/pages/([^/]*)$ /cms/index.php?page=pages/$1 [L,QSA]
RewriteRule ^/cms/modules/([^/]*)/([^/]*)/$ /cms/index.php?page=modules/$1/$2 [L,QSA]
RewriteRule ^/cms/modules/([^/]*)/([^/]*)$ /cms/index.php?page=modules/$1/$2 [L,QSA]
RewriteRule ^/cms/modules/([^/]*)/([^/]*)/([^/]*)$ /cms/index.php?page=modules/$1/$2&id=$3 [L,QSA]

Answer 1

If this is in an htaccess file, the URI's have their prefix removed (the leading slash), so those patterns won't match anything. Either remove the leading slash from the pattern or make it optional (with a ?):
RewriteRule ^/?cms/([^/]*)/$ cms/index.php?page=$1 [L,QSA]
RewriteRule ^/?cms/([^/]*)$ /cms/index.php?page=$1 [L,QSA]
RewriteRule ^/?cms/pages/([^/]*)/$ /cms/index.php?page=pages/$1 [L,QSA]
RewriteRule ^/?cms/pages/([^/]*)$ /cms/index.php?page=pages/$1 [L,QSA]
RewriteRule ^/?cms/modules/([^/]*)/([^/]*)/$ /cms/index.php?page=modules/$1/$2 [L,QSA]
RewriteRule ^/?cms/modules/([^/]*)/([^/]*)$ /cms/index.php?page=modules/$1/$2 [L,QSA]
RewriteRule ^/?cms/modules/([^/]*)/([^/]*)/([^/]*)$ /cms/index.php?page=modules/$1/$2&id=$3 [L,QSA]
Additionally, your first rule can be simplified to just:
RewriteCond %{REQUEST_FILENAME} -f [NC,OR]
RewriteCond %{REQUEST_FILENAME} -d [NC]
RewriteRule ^ - [L]